Observed arrival · 2026-10-29
Math String’s interactive math gazetteer
A directory of interactive math explorations, puzzles, and simulations spanning topics from braid diagrams and sandpiles to number theory and geometry.
○Open
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People who enjoy playful mathematical experiments
- Worth noticing
- The site cautions that its categories are roughly named and “not to be taken seriously.”
Field notes
The homepage organizes its entries into broad mathematical neighborhoods, from group theory and graph theory to art and simulations. The extracted page lists 89 links, including entries with titles such as “Odious Numbers,” “Fence Maxing,” and “Tangle Darkly.” Its own note says the categories are only roughly named, so the headings read as a loose guide rather than a formal curriculum.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue